I have a Whirlpoot Duet washer model GHW9100LQ1 that I purchased about a year ago. Recently, it has begun to stop in mid-cycle, usually while it is filling with water, and flashes the "HF" error message. I have checked the water inlet hoses and the inlet filters, and they seem to be OK (maybe a little debris on the cold water inlet filter, which I cleaned off). The machine seems to be filling OK. If I press pause/cancel twice and unplug it, often it will work OK for the rest of the cycle (but not always). Sometimes after I do this it will flash an "F" error message.